| 摘要 |
PROBLEM TO BE SOLVED: To perform press machining with high accuracy, while corresponding to mechanical changes due to thermal expansion.SOLUTION: Servo motor control means moves a slide to a stop position before a series of machining processing to work, and sense value detecting means detects a sense value of a sensing element at the stop position of the slide and stores the detected sense value. In the series of the machining processing, the sense value of the sensing element at the stop position of the slide is detected, and the detected sense value is stored. Correction value calculating means calculates a correction value from the two values, and the servo motor control means controls a servo motor on the basis of a detected slide position, a set slide position, and the correction value calculated by the correction value calculating means, in the next machining processing.SELECTED DRAWING: Figure 4 |
